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Finding the Fourth Proportional to 147,644.80, 221,431.20 and 42,452.80

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Solution

The fourth proportional to 147,644.80, 221,431.20 and 42,452.80 is: 63,668.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,644.80 : 221,431.20 = 42,452.80 : x
  2. Step 2: Convert to fraction form
    147,644.80/221,431.20 = 42,452.80/x
  3. Step 3: Cross multiply
    147,644.80x = 221,431.20 × 42,452.80
  4. Step 4: Simplify right side
    147,644.80x = 9,400,374,447.36
  5. Step 5: Solve for x
    x = 9,400,374,447.36/147,644.80
  6. Step 6: Final answer
    x = 63,668.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.